Device for sampling and transporting nano-objects contained in aerosols for the analysis thereof
a technology of nano-objects and aerosols, which is applied in the field of devices for sampling and transporting nano-objects contained in aerosols for the analysis thereof, can solve the problems of unintentional opening of cassettes, loss of material adsorption onto filters or poor traceability of filters, and contamination of filters by operators working in stations for making nano-objects or developing nanomaterials
Active Publication Date: 2014-09-25
PARTICLEVER +1
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Developing reliable aerosol sampling and analysing methods is thus a key issue in terms of public health and prevention of risks in a work station.
The implementation devices are thus provided to open the cassette readily and by any person: opening with an unintentional extraction can thus result in an outside contaminations of the filter, a loss of material adsorbed onto the filter or a poor traceability of the filter.
In particular, an operator working in a station for making nano-objects or developing nanomaterials can unintentionally open a cassette, contaminate a filter, put an already used one, etc.upon sampling, it is necessary to have the best representation of the particulate fraction inhaled by the mouth and nose of an individual.
But, some methods described in the literature have an orientation of the sampling device which is not optimum, which can make the interpretation of results uncertain.
On the other hand, an elementary analysis does not enable the structure or assembly of these elements together to be determined.
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[0048]To be able to perform the sampling of nano-objects likely to be contained in an aerosol, the device according to the invention first comprises a filter 30 suitable for trapping nano-objects likely to be suspended in air, which is accommodated and held in a cavity formed by a cassette C in a closed configuration.
[0049]Thus, the sampling method according to the invention consists in orienting the closed cassette such that the air to be analysed is sucked by a pump not represented from a port 20 and comes out through the port 10 to go then to the pump.
[0050]The suction can of course be provided according to a reverse path, that is from the port 10 to the port 20. The nano-objects or micrometric size particles thus sucked will be collected on the filter 30 held in the cassette. It is provided in the sampling method according to the invention to orient the cassette such that the sampling is the most representative either of breathing though the mouth, or through the nose. Thus, pre...
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Abstract
A device for sampling and transporting nano-objects for analysis thereof. A cassette portion of the device includes two parts with mutual assembly mechanisms between them including a clipping mechanism configured not to be accessible from outside in assembled position of the parts. Therefore, any inopportune opening of the cassette and thus extraction of the sampling filter accommodated in the cassette somewhere else than the place intended for the analysis are avoided.
Description
TECHNICAL FIELD[0001]The invention relates to a device for sampling and transporting nano-objects contained in aerosols for the analysis thereof.[0002]More particularly, the invention is applicable to sampling and transporting nanoparticles or nano-objects contained in aerosols.[0003]By nano-objects, it is meant objects at least one unit size of which is lower than about 100 nm.[0004]By nanoparticle, it is meant particles generally (but not only) spherical which unit average diameter is lower than about 100 nm, in accordance with ISO TS / 27687 standard.[0005]The invention is also applicable to sampling and transporting micrometric size particles contained in aerosols.PRIOR ART[0006]The rapid growth of nanotechnologies has made essential the implementation of works on the health and environmental impacts of these new materials in order to ensure optimum safety conditions, in particular for operators (workers) in a station for making nano-objects or developing nanomaterials.[0007]For a...
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Login to View More IPC IPC(8): B01L3/00
CPCB01L3/5023G01N1/2205G01N2001/2276G01N2001/2288
Inventor CLAVAGUERA, SIMONDECOLIN, ERICHEBERT, GUILLAUMERECHATIN, JEAN-LOUPTARDIF, FRANCOIS
Owner PARTICLEVER